CN104896917A - Calcining kiln tail system for cement production - Google Patents
Calcining kiln tail system for cement production Download PDFInfo
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- CN104896917A CN104896917A CN201510359825.7A CN201510359825A CN104896917A CN 104896917 A CN104896917 A CN 104896917A CN 201510359825 A CN201510359825 A CN 201510359825A CN 104896917 A CN104896917 A CN 104896917A
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Abstract
The invention discloses a calcining kiln tail system for cement production. The system comprises an old five-stage cyclone preheater, a new five-stage cyclone preheater and a reconstructed decomposing furnace, wherein the old five-stage cyclone preheater and the new five-stage cyclone preheater are arranged at a calcining kiln tail; the reconstructed decomposing furnace is communicated with the tail of a calcining kiln, comprising an old decomposing furnace used as a first-stage decomposing furnace, and a new second-stage pipeline decomposing furnace which is of an n structure and arranged above the first-stage decomposing surface; the second-stage pipeline decomposing furnace comprises a communication pipeline, and two branch pipelines which are communicated with the communication pipeline; the communication pipeline is communicated with the first-stage decomposing furnace; the two branch pipelines are respectively communicated with five-stage cyclone barrels of an old five-stage cyclone preheater and a new five-stage cyclone preheater. The system is compact in structure and can improve the production capacity more than one time; the production indexes can be obviously improved.
Description
Technical field
The present invention relates to cement manufacture plant technical field, relate in particular to a kind of calcining kiln tail system for manufacture of cement.
Background technology
In recent decades, China's cement industry obtains great development, and new type nonaqueous cement technology reaches its maturity.In 10 years of the beginning of this century, the new type nonaqueous cement production line of domestic construction, based on the middle-size and small-size scale of 1000 ~ 2500t/d, compares with current big-and-middle-sized cement producing line, labor productivity is low, energy consumption index is high, economic benefit is backward.At present, the part 1000t/d cement producing line market competitiveness is poor, is difficult to survive and closes, and causes the economic loss that enterprise is serious.
How to make full use of the existing facility of middle-size and small-size scale cement producing line, carry out effective technological transformation, make it stride into big-and-middle-sized cement ranks, this is the important topic that current China cement industry faces.
The calcining kiln tail of middle-size and small-size cement producing line generally adopts single series precalcining system, and specification of equipment is less than normal, and production capacity is low.The technological transformation work of calcining kiln tail mainly concentrates in the past to be done to optimize to the local of preheater, dore furnace, very limited to the improvement of system cloud gray model.For needing the engineering increasing substantially calcining kiln tail production capacity, external past attempts adopts overlaps new framework outward again at original preheater framework, the successively example of transformation or multiplying arrangement specification; Existing equipment is then all removed by the domestic engineering had, newly-built a set of new kiln tail system.The defect of these two kinds of renovation techniques is to transform excessive cycle, and the production suspension induced losses of original system is excessive, and improvement cost is too high simultaneously.If on the basis of original calcining kiln tail, by increasing a set of preheater, form new and old two cover system paired runnings, then the production capacity that can realize calcining kiln tail is enhanced about more than once.Meanwhile, the construction of new pre-heating system does not affect the operation of original system.But newly increase a set of preheater arranged side by side on original system side, general factory floor condition does not allow.Therefore, this renovation technique there is no practice at home and abroad.Therefore, new and old kiln tail preheater renovation technique in parallel is still at home and abroad blank.
Summary of the invention
The object of the invention is to the defect for above-mentioned prior art, a kind of calcining kiln tail system for manufacture of cement is provided, original calcining kiln tail system is transformed, this system architecture is compact, without the need to separately accounting for place, and effectively can utilize space between the old and new's preheater, system capacity is enhanced about more than once.
For achieving the above object, the technical solution used in the present invention is:
A kind of calcining kiln tail system for manufacture of cement, comprise the old five-stage cyclone preheater and new five-stage cyclone preheater, transformation formula dore furnace that are arranged on rotary kiln, described transformation formula dore furnace is communicated with the kiln tail of rotary kiln, the mixed material in transformation formula dore furnace is sent into the kiln tail of rotary kiln; Described transformation formula dore furnace comprises old-fashioned dore furnace as level of decomposition stove and newly-increased secondary canalization dore furnace, described secondary canalization dore furnace is arranged on the top of level of decomposition stove, described secondary canalization dore furnace is Π shape structure, two subtubes comprising connecting pipe and be connected with connecting pipe, described connecting pipe is connected with level of decomposition stove, and two described subtubes are communicated with the level V cyclone cylinder of new five-stage cyclone preheater with old five-stage cyclone preheater respectively; New cyclone preheater is arranged on former rotary kiln pier, is that fore-and-aft direction is arranged with old cyclone preheater in rotary kiln axis direction.
Calcining kiln tail system for manufacture of cement of the present invention, set up new five-stage cyclone preheater and old-fashioned dore furnace is transformed, new five-stage cyclone preheater is the five-stage cyclone preheater newly increased, identical with old five-stage cyclone preheater structure, new cyclone preheater is arranged on former rotary kiln pier, is that fore-and-aft direction is arranged with old cyclone preheater in rotary kiln axis direction.Transformation formula dore furnace improves material and gas residence time in dore furnace, and the warm-up ability of system is enhanced about more than once; Increase the secondary canalization dore furnace of the Π shape structure arranged, transformation formula dore furnace is communicated with the level V cyclone cylinder of new five-stage cyclone preheater with old five-stage cyclone preheater.The part heat smoke of transformation formula dore furnace and material is defeated is delivered in the level V cyclone cylinder of old five-stage cyclone preheater and new five-stage cyclone preheater by secondary canalization dore furnace.System capacity is enhanced about more than once, and production target significantly improves.
As the improvement to technique scheme, described old five-stage cyclone preheater is connected with the top of level of decomposition stove with the material outlet of the fourth stage cyclone cylinder of new five-stage cyclone preheater, and described old five-stage cyclone preheater is connected with the bottom of level of decomposition stove with the material outlet of the level V cyclone cylinder of new five-stage cyclone preheater.
As the improvement to technique scheme, the link of described transformation formula dore furnace and rotary kiln is provided with feed pipe, and described feed pipe is rectangular configuration.
As the improvement to technique scheme, rotary kiln comprises kiln tail smoke-box, is provided with chute between the kiln tail of described kiln tail smoke-box and rotary kiln, and the cornerite of described chute is 150 ~ 160 degree.
Calcining kiln tail system for manufacture of cement of the present invention, make full use of original old preheater dore furnace, on old five-stage cyclone preheater basis, transform dore furnace by a row five-stage cyclone preheater newly-increased above rotary kiln, newly-increased preheater specification Sum decomposition stove modification scheme can require adjustment arbitrarily according to carrying producing simultaneously.Utilize the space between the old and new's preheater framework, increase secondary dore furnace, improved dore furnace is decomposed as secondary as level of decomposition, newly-increased part by original old dore furnace, and described secondary canalization dore furnace is arranged on the top of level of decomposition stove.Secondary dore furnace adopts Π shape structure, can be connected with the most subordinate cyclone cylinder of the old and new's preheater.System capacity is enhanced about more than once.The material of the fourth stage cyclone cylinder of new preheater all can send into level of decomposition stove, also directly can send into secondary dore furnace bottom, to meet the needs of denitration fractional combustion.
New preheater enters the rectangle feed arrangement of kiln material by particular design, ensures that material enters kiln smoothly.For preventing kiln tail from leaking material, kiln tail smoke-box particular design, chute cornerite is 150 ~ 160 degree.
Set up new five-stage cyclone preheater and design secondary dore furnace, improve material and gas residence time in dore furnace, the preheating predecomposition ability of system is enhanced about more than once; Increase the secondary canalization dore furnace of the Π shape structure arranged, secondary dore furnace is communicated with the old and new's five-stage whirlwind is organic.
New preheater is arranged in the top of rotary kiln back segment, instead of traditional is arranged in kiln tail; Secondary dore furnace is arranged between the old and new's preheater framework, does not increase extra civil engineering costs.The material of the fourth stage cyclone cylinder of described new preheater all can send into level of decomposition stove, also directly can send into secondary dore furnace bottom, to meet the needs of denitration fractional combustion.
New preheater enters the rectangle feed arrangement of kiln material by particular design, ensures that material enters kiln smoothly.
The old and new's preheater can relatively independently run again simultaneously, according to specification independence feed, the independence wind of the old and new's preheater, even when one lists existing random failure, carries out single-row operation.
Compared with prior art, the advantage that has of the present invention and good effect are:
Calcining kiln tail system for manufacture of cement of the present invention, transform original calcining kiln tail system, this system architecture is compact, without the need to separately accounting for place, and effectively can utilize space between the old and new's preheater, system capacity is enhanced about more than once, and production target significantly improves.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, the accompanying drawing in the following describes is only some embodiments of the present invention.
Fig. 1 is structural representation of the present invention;
Fig. 2 is simplification structural representation of the present invention;
Fig. 3 is the structural representation of feed pipe of the present invention;
Reference numeral: 1, old five-stage cyclone preheater; 2, new five-stage cyclone preheater; 3, formula dore furnace is transformed; 4, rotary kiln; 5, secondary canalization dore furnace; 6, old-fashioned dore furnace; 7, connecting pipe; 8, subtube; 9, feed pipe.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, and any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Embodiment one
As shown in Fig. 1 and 2 and 3, calcining kiln tail system for manufacture of cement of the present invention, comprise the old five-stage cyclone preheater 1 and new five-stage cyclone preheater 2, transformation formula dore furnace 3 that are arranged on rotary kiln, described transformation formula dore furnace 3 is communicated with the kiln tail of rotary kiln 4, the mixed material in transformation formula dore furnace 3 is sent into the kiln tail of rotary kiln 4; Described transformation formula dore furnace 3 comprises old-fashioned dore furnace 6 as level of decomposition stove and newly-increased secondary canalization dore furnace 5, described secondary canalization dore furnace 5 is arranged on the top of level of decomposition stove 6, described secondary canalization dore furnace 5 is Π shape structure, two subtubes 8 comprising connecting pipe 7 and be connected with communicating pipe 7 road, described connecting pipe 7 is connected with level of decomposition stove, and two described subtubes 8 are communicated with the level V cyclone cylinder of old five-stage cyclone preheater 1 with new five-stage cyclone preheater 2 respectively; New cyclone preheater is arranged on former rotary kiln pier, is that fore-and-aft direction is arranged with old cyclone preheater in rotary kiln axis direction.
Calcining kiln tail system for manufacture of cement of the present invention, set up new five-stage cyclone preheater 2 and old-fashioned dore furnace 6 is transformed, the five-stage cyclone preheater of new five-stage cyclone preheater 2 for newly increasing, identical with old five-stage cyclone preheater 1 structure, new cyclone preheater 2 is arranged on former rotary kiln pier, is that fore-and-aft direction is arranged with old cyclone preheater 1 in rotary kiln axis direction.And old-fashioned dore furnace 6 is transformed, transformation formula dore furnace 3 improves material and gas residence time in dore furnace, and the warm-up ability of system is enhanced about more than once; Increase the secondary canalization dore furnace 5 of the Π shape structure arranged, transformation formula dore furnace 3 is communicated with the level V cyclone cylinder of old five-stage cyclone preheater 1 with new five-stage cyclone preheater 2.In the part heat smoke of transformation formula dore furnace 3 and the defeated level V cyclone cylinder being delivered to old five-stage cyclone preheater 1 and new five-stage cyclone preheater 2 by secondary canalization dore furnace 5 of material.System capacity is enhanced about more than once, and production target significantly improves.
Described old five-stage cyclone preheater 1 is connected with the top of level of decomposition stove with the material outlet of the fourth stage cyclone cylinder of new five-stage cyclone preheater 2, described old five-stage cyclone preheater 1 is connected with the bottom of level of decomposition stove with the material outlet of the level V cyclone cylinder of new five-stage cyclone preheater 2
Described transformation formula dore furnace 3 is provided with feed pipe 9 with the link of rotary kiln 4, and described feed pipe 9 is rectangular configuration.
Rotary kiln comprises kiln tail smoke-box, is provided with chute between the kiln tail of described kiln tail smoke-box and rotary kiln, and described chute cornerite is 150 ~ 160 degree.
Adopt of the present invention for after the calcining kiln tail system improving alteration technological transformation of manufacture of cement, the production capacity of rotary kiln greatly improves, and the production capacity of rotary kiln is enhanced about more than once, after transformation, its technical indicator improved is compared with original technology, and comparison sheet is as follows:
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (4)
1. the calcining kiln tail system for manufacture of cement, it is characterized in that: comprise the old five-stage cyclone preheater and the new five-stage cyclone preheater of work, transformation formula dore furnace that are arranged on rotary kiln, described transformation formula dore furnace is communicated with the kiln tail of rotary kiln, the mixed material in transformation formula dore furnace is sent into the kiln tail of rotary kiln; Described transformation formula dore furnace comprises old-fashioned dore furnace as level of decomposition stove and newly-increased secondary canalization dore furnace, described secondary canalization dore furnace is arranged on the top of level of decomposition stove, described secondary canalization dore furnace is Π shape structure, two subtubes comprising connecting pipe and be connected with connecting pipe, described connecting pipe is connected with level of decomposition stove, and two described subtubes are communicated with the level V cyclone cylinder of new five-stage cyclone preheater with old five-stage cyclone preheater respectively.
2. the calcining kiln tail system for manufacture of cement according to claim 1, it is characterized in that: described old five-stage cyclone preheater is connected with the top of level of decomposition stove with the material outlet of the fourth stage cyclone cylinder of new five-stage cyclone preheater, described old five-stage cyclone preheater is connected with the bottom of level of decomposition stove with the material outlet of the level V cyclone cylinder of new five-stage cyclone preheater.
3. the calcining kiln tail system for manufacture of cement according to claim 1 and 2, it is characterized in that: the link of described transformation formula dore furnace and rotary kiln is provided with feed pipe, described feed pipe is rectangular configuration.
4. the calcining kiln tail system for manufacture of cement according to claim 3, is characterized in that: rotary kiln comprises kiln tail smoke-box, be provided with chute between the kiln tail of described kiln tail smoke-box and rotary kiln, described chute cornerite is 150 ~ 160 degree.
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| CN201510359825.7A CN104896917A (en) | 2015-06-26 | 2015-06-26 | Calcining kiln tail system for cement production |
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| CN201510359825.7A CN104896917A (en) | 2015-06-26 | 2015-06-26 | Calcining kiln tail system for cement production |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105403060A (en) * | 2015-12-09 | 2016-03-16 | 南京恒海水泥工程设计有限公司 | Chromium-salt roasting preheater |
| CN107084617A (en) * | 2017-06-12 | 2017-08-22 | 北京凯盛建材工程有限公司 | A kind of cement cyclone preheater kiln transform the energy-saving and emission-reduction remodeling method of the outer nsp kiln of kiln as |
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| CN104654816A (en) * | 2015-02-10 | 2015-05-27 | 南京凯盛开能环保能源有限公司 | Cement kiln waste-heat utilization system and method for directly driving rotating equipment by turbine |
| CN204718368U (en) * | 2015-06-26 | 2015-10-21 | 南京恒海水泥工程设计有限公司 | For the calcining kiln tail system of manufacture of cement |
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| US4101336A (en) * | 1976-01-12 | 1978-07-18 | F. L. Smidth & Co. | Method of burning pulverous alkali-containing raw materials and kiln plant therefor |
| CN201530782U (en) * | 2009-07-30 | 2010-07-21 | 北京金隅红树林环保技术有限责任公司 | Device for utilizing high-alkali raw materials to produce low-alkali cement |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105403060A (en) * | 2015-12-09 | 2016-03-16 | 南京恒海水泥工程设计有限公司 | Chromium-salt roasting preheater |
| CN107084617A (en) * | 2017-06-12 | 2017-08-22 | 北京凯盛建材工程有限公司 | A kind of cement cyclone preheater kiln transform the energy-saving and emission-reduction remodeling method of the outer nsp kiln of kiln as |
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Application publication date: 20150909 |
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